<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRoleDialogVisible = true">添加角色</el-button>
        </el-col>
      </el-row>
      <el-table :data="rolesList" border stripe>
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['vcenter','bdbottom', index1 === 0 ? 'bdtop':'']"
                    v-for="(item1,index1) in scope.row.children"
                    :key="item1.id">
              <el-col :span="4">
                <el-tag type="primary" closable
                        @close="removeRights(scope.row,item1.id)">
                  {{ item1.authName }}
                </el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <el-col :span="20">
                <el-row :class="['vcenter',index2 === 0 ? '': 'bdtop']"
                        v-for="(item2,index2) in item1.children" :key="item2.id">
                  <el-col :span="5">
                    <el-tag type="success" closable
                            @close="removeRights(scope.row,item2.id)">
                      {{ item2.authName }}
                    </el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="19">
                    <el-tag v-for="(item3,index3) in item2.children" :key="item3.id"
                            type="warning" closable
                            @close="removeRights(scope.row,item3.id)">
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <el-table-column label="序号" type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini"
                       @click="showRoleEditDialog(scope.row.id)">编辑
            </el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini"
                       @click="removeRole(scope.row.id)">删除
            </el-button>
            <el-button type="warning" icon="el-icon-setting" size="mini"
                       @click="showSetRightDialog(scope.row)">分配权限
            </el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <el-dialog
        title="分配权限"
        :visible.sync="setRightDialogVisible"
        width="50%"
        @close="serRightDialogClosed">
      <el-tree :data="rightsList" :props="treeProps"
               show-checkbox
               node-key="id"
               default-expand-all
               :default-checked-keys="defKeys"
               ref="treeRef"
               check-on-click-node
      ></el-tree>

      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
    <el-dialog
        title="编辑角色"
        :visible.sync="editRoleDialogVisible"
        width="50%"
        @close="editRoleDialogClosed">
      <el-form :model="editForm"
               :rules="formRules"
               ref="editFormRef"
               label-width="80px">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
          <el-button @click="editRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editRole">确 定</el-button>
        </span>
    </el-dialog>
    <el-dialog
        title="添加角色"
        :visible.sync="addRoleDialogVisible"
        width="50%"
        @close="addRoleDialogClosed">
      <el-form :model="addForm"
               :rules="formRules"
               ref="addFormRef"
               label-width="80px">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
          <el-button @click="addRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addRole">确 定</el-button>
        </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      rolesList: [],
      setRightDialogVisible: false,
      rightsList: [],
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      defKeys: [],
      roleId: '',
      editRoleDialogVisible: false,
      addRoleDialogVisible: false,
      editForm: {},
      addForm: {
        roleName: '',
        roleDesc: '',
      },
      formRules: {
        roleName: [{required: true, message: '请输入角色名称', trigger: 'blur'}],
      },
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    async getRolesList() {
      const {data: res} = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
    },
    async removeRights(role, rightId) {
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消删除权限')
      }
      const {data: res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除角色权限失败')
      }
      this.$message.success('删除角色权限成功')
      role.children = res.data
    },
    async showSetRightDialog(role) {
      const {data: res} = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限列表失败')
      }
      this.rightsList = res.data
      this.roleId = role.id
      // console.log(this.rightsList)
      this.getLeafKeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
    getLeafKeys(node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => this.getLeafKeys(item, arr))
    },
    serRightDialogClosed() {
      this.defKeys = []
    },
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const rids = keys.join(',')
      const {data: res} = await this.$http.post(`roles/${this.roleId}/rights`, {rids: rids})
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败')
      }
      this.$message.success('分配权限成功')
      this.getRolesList()
      this.setRightDialogVisible = false
    },
    removeRole(id) {
      this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async () => {
        const {data: res} = await this.$http.delete(`roles/${id}`)
        if (res.meta.status !== 200) return this.$message.error('删除角色失败')
        this.$message.success('删除角色成功')
        this.getRolesList()
      }).catch(() => {
        this.$message.info('取消角色删除')
      });
    },
    async showRoleEditDialog(id) {
      const {data: res} = await this.$http.get(`roles/${id}`)
      if (res.meta.status !== 200) return this.$message.error('查询角色信息失败')
      this.editForm = res.data
      this.editRoleDialogVisible = true
    },
    editRoleDialogClosed() {
      this.editForm = {}
    },
    editRole() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const {data: res} = await this.$http.put(`roles/${this.editForm.roleId}`,
            {roleName: this.editForm.roleName, roleDesc: this.editForm.roleDesc})
        if (res.meta.status !== 200) return this.$message.error('更新角色信息失败')
        this.$message.success('更新角色信息成功')
        this.editRoleDialogVisible = false
        this.getRolesList()
      })
    },
    addRole() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const {data: res} = await this.$http.post('roles', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('添加角色失败')
        this.$message.success('添加角色成功')
        this.addRoleDialogVisible = false
        this.getRolesList()
      })
    },
    addRoleDialogClosed(){
      this.addForm = {}
    },
  },
}
</script>

<style scoped>
.el-tag {
  margin: 8px;
}

.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}

.vcenter {
  display: flex;
  align-items: center;
}
</style>